Determine what your jewlery and precious metals are worth

Carats can be confusing when determining the value of jewlery. Listed are the common carats along with the purity of the metals.

Precious metals are measured in troy weight system.

• one troy ounce = 31.1034768 gram

Platinum

• 999 (also known as three nines fine)
  • 99.9% purity
• 950 (the most common purity for platinum jewelery)
  • 95.0% purity
• 900 (also known as one nine fine)
  • 95.0% purity
• 850
  • 85.0% purity

Gold

• 999 (Fine gold equivalent to 24 carat, also known as three nines fine)
  • 99.9% purity
• 990 (also known as two nines fine)
  • 99.0% purity
• 916 (equivalent to 22 carat)
  • 91.6% purity
• 833 (equivalent to 20 carat)
  • 83.3% purity
• 750 (equivalent to 18 carat)
  • 75.0% purity
• 625 (equivalent to 15 carat)
  • 62.5% purity
• 585 (equivalent to 14 carat)
  • 58.5% purity
• 417 (equivalent to 10 carat)
  • 41.7% purity
• 375 (equivalent to 9 carat)
  • 37.5% purity
• 333 (equivalent to 8 carat; minimum standard for gold in Germany after 1884)
  • 33.3% purity

Silver

• 999 (Fine silver used in bullion bars, also known as three nines fine)
  • 99.9% purity
• 980 (common standard used in Mexico ca.1930 - 1945)
  • 98.0% purity
• 958 (equivalent to Britannia silver)
  • 95.8% purity
• 950 (equivalent to “French 1st Standard”)
  • 95.0% purity
• 925 (equivalent to Sterling silver)
  • 92.5% purity
• 900 (equivalent to “Coin silver” in the USA, also known as one nine fine)
  • 90.0% purity
• 875 (could be found in former USSR)
  • 87.5% purity
• 830 (common standard used in older Scandinavian silver)
  • 83.0% purity
• 800 (minimum standard for silver in Germany after 1884; Egyptian silver)
  • 80.0% purity